101551131 has 32 divisors (see below), whose sum is σ = 164778240. Its totient is φ = 61300800.

The previous prime is 101551117. The next prime is 101551139. The reversal of 101551131 is 131155101.

101551131 is a `hidden beast` number, since 101 + 551 + 13 + 1 = 666.

It is not a de Polignac number, because 101551131 - 2⁹ = 101550619 is a prime.

It is a super-2 number, since 2×101551131² = 20625264414758322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101551139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97791 + ... + 98823.

It is an arithmetic number, because the mean of its divisors is an integer number (5149320).

Almost surely, 2^101551131 is an apocalyptic number.

101551131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101551131 is a deficient number, since it is larger than the sum of its proper divisors (63227109).

101551131 is a wasteful number, since it uses less digits than its factorization.

101551131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

The square root of 101551131 is about 10077.2581092279. The cubic root of 101551131 is about 466.5464847548.

The spelling of 101551131 in words is "one hundred one million, five hundred fifty-one thousand, one hundred thirty-one".